<template>
  <div class="tar-bar-item" @click="itemClick">
    <div v-if='!isActive'><slot name="item-icon"></slot></div>
    <div v-else><slot name="item-icon-active"></slot></div>
    <div :style='activeStyle'><slot name="item-text"></slot></div>
  </div>
</template>

<script>
	export default {
    name: 'TarBarItem',
    props: {
      path: String,
      activeColor: {
        type: String,
        default: '#d81e06'
      }
    },
    computed: {
      isActive(){
        return this.$route.path.indexOf(this.path) !== -1
      },
      activeStyle(){
        return this.isActive ? {color: this.activeColor} : {}
      }
    },    
    methods: {
      itemClick() {
        // 末尾一定要加 .catch(err => {}), 否则报错 具体请看 [https://forum.vuejs.org/t/navigationduplicated/71600]
        this.$router.replace({path: this.path, replace: true}).catch(err => {})
      }
    }
	}
</script>

<style scoped>
  .tar-bar-item {
      flex: 1;
      text-align: center;
      height: 49px;
      font-size: 14px;
  }

  .tar-bar-item img {
      width: 24px;
      height: 24px;
      margin-top: 3px;
      vertical-align: middle;  /* 去掉图片底部的3px */
      margin-bottom: 2px;
  }
  
</style>